1. Integrated Collaborative Information Systems Ahmet E. Topcu atopcu@cs.indiana.edu atopcu@cs.indiana.edu Advisor: Prof Dr. Geoffrey Fox 1

2. Outline  Introduction  Motivation  Research Issues  Architecture  Measurements and Analysis  Conclusions Contributions  Future Works 2

3. Introduction  Efforts for collaboration and sharing between users and communities in Web 2.0 domain Web 2.0  Represents new web-based services  Provides rich and lightweight online tools  Provides reusable services and data  Updates software and data often very rapidly  Provides interactive user interfaces  Provides an architecture for easy user contribution 3

4. Web 2.0 Examples  Blogs (blogger.com, GoogleBlog)  Wikis(Wikipedia, WikiWikiWeb)  Social Networking Tools(MySpace,LinkedIn)  Social Bookmarking Tools(del.icio.us,YouTube)  Domain of scientific research (CiteULike, Connotea, and Bibsonomy)  Domain specific academic search tools(CiteSeer, Google Scholar, Windows Live Academic) 4

5. Motivation  Numerous annotation and search tools. Each of them has different capability and not completed defined metadata  Need for exploiting large set of data sources from various tools  Integration of major annotation and search tools in order to use them having additional functionalities for scientific research  No easy way to keep resultant information searched using Web Search Tools.  Utilize the best capabilities of the tools 5

6. Motivation II  Necessities for integration  Need for common data format  No easy way to find all publications  Example: A search in Google Scholar for the publications of our research lab (Community Grids Lab) will return only about 20% of the total CGL publications.  Wealth of information contained in numerous field remains largely outside the scope of tools  What happens if tool you choose is not adopted or worse just disappears  Example: Windows Live Academic (WLA) 6

7. Motivation Scenario : Collection of Information using Search Tools  The search tools have two main roles in the usage scenarios of our system: They will be used to seed the creation of a community (e.g., the papers of a research group, the papers on a chemical compound, etc.). These seeds will then be expanded and refined by our community-building tools and linked with the annotation tools. They will be used to extract the citation count of scientific papers. 7

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9. Motivation Scenario II : Collection of Information using Search Tools  Extract information from Search Domain Example: Using heuristic method for Google Scholar.  Extract information to build metadata having search key  This model can be used for various search tools Collect metadata for scholarly published papers. Build communities implied by the co-authors of papers. Search information through populated metadata. 9

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11. Research Issues  Integration Building a model to  integrate community tools and adding value to existing systems  natural collection of related documents easily  support more metadata  support tagging  Scalability Investigate system behavior for increased message rate per second  Flexibility and Extensibility Easy to add and remove service mechanism Easy of integrating annotation and search tools 11

12. Architecture Principles  Community-centric platform of services  Integration of dynamic publication, search tools into Cyberinfrastructure based scholarly research  Integration such scientific research defining metadata and using various URL, and map them  Services that aggregate information from a variety of sources (i.e., “mash-up” tools) and provide added value to communities of researchers  Do not build a new tagging or search systems. Reuse the tools and adding value to existing systems  Easier to link together all relating information common Digital Entity (DE) 12

13. Digital Entity(DE) Definition 13

14. Integrated Collaborative Information Systems (ICIS) Architecture  Tools: External web tools providing services to clients.  Clients: Users to use the ICIS.  Gateways: Channels between tools and ICIS Channels between clients and ICIS  Services : Collaborative environments for users to utilize the ICIS system functionalities. 14

15. Integrated Collaborative Information Systems (ICIS) Architecture Components  Tools external web tools to provide services to clients  Integration Manager have information service and provide communication between tools, client, and responsible for integration operation in the system  Filter operates two-way data filtering  Permission Handler checks existing Digital Entity (DE)s permission or build a new permission token for new DEs  Data Manager provides a mechanism to extract data from a repository and insert data into a repository  Storage maintains user data and permissions in the database 15

16. Integrated Collaborative Information Systems (ICIS) 16

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18. Integrated Collaborative Information Systems (ICIS) Services 18

19. Summary: Architecture  Build integration architecture  We do not reinvent existing tools  Use existing features of tools  Supports tagging services  Provides common metadata  Allows to use consistent data  Provides common resolution of filters  Supports authorization of users 19

20. Use Case: Collection of Metadata from web pages  Collect Digital Entities in web pages using HTTP methods.  Analyze Using heuristic methodology to extract metadata fields of the Digital Entities for publications  Build RSS objects using collected Digital Entities. New tags using collected Digital Entities.  Compare Collected Digital Entities from web pages with the existing Digital Entities in ICIS repository.  If they are:  different: Store new Digital Entities in ICIS repository.  same: Option to update tags and other fields for collected DEs  Share New Digital Entities with other tools using ICIS repository. 20

21. Security Model  Security in web 2.0 can be limited.  We implemented a simple but more powerful security model around local tools that wrap Web 2.0 systems.  We used an access-control matrix model to provide security for our information system Supports multiple groups and multiple users for each Digital Entity (DE). Similar to UNIX file system  The Unix RWX bits corresponds to Read, Write, and Execute operation for each file and directory. In our system, DE correspond to the file element and folder corresponds to the directory element. For each DE and folder, there are three types of access rights defined in the systems: Read, Write, and Delete. 21

22. Security Model II  We have a security model that supports Level of Authorization  Roles are defined as Super Administrator (SA) and Group Administrator (GA), User  The system allows having more than one SA.  An existing SA can add other SAs to the system.  SA can assign any User to become GA, and remove GA from being group administrator.  Each group should at least one GA. GA add/remove Users from the group.  Users can allow other Users and groups to share their resources. User profile  Share user profile between sites. 22

23. Security Model III User, Group, DE, and Folder relations 23

24. Benchmarks and Environments  Message rate scalability investigation Search operation  Using Database Access  Using Memory Utilization Test environments  Apache Axis version 1.2  Apache Tomcat Server version 5.0.28  Java 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04)  The maximum heap size of Java Virtual Machine(JVM) is 1024 MB  1 Gbits/sec network bandwidth 24

25. Integrated Collaboration Information System(ICIS) Framework  Search local repository using database access with increasing Message rate 25

26. Message rate scalability result (Search using Database) 26

27. Integrated Collaboration Information System(ICIS) Framework II  Search local repository using memory with increasing Message rate 27

28. Message rate scalability result (Search using Memory Utilization) 28

29. Contribution  System Research Providing a architecture and model for integration of collaborative systems Integration and interoperability of annotation, search tools, and web search tools User collaboration and sharing resources. Providing benchmarks to evaluate the scalability of the prototype system 29

30. Contribution II  System Research Increasing performance and scalability using memory utilization Providing flexibility allowing integration of different tools having common metadata. Easy to add and extend service mechanism Supporting authorization and event based mechanism Implementing a rather more powerful access control mechanism  System Software An ICIS Infrastructure of Internet Documentation and Integration of Metadata (IDIOM) systems 30

31. Future Works  Apply Integrated Collaboration Information System(ICIS) Framework to other application domains such as streaming collaboration systems  Integrate other collaboration and search tools into ICIS Framework CiteSeer X  Use distributed storages instead of a single storage  Expand our approaches to open-access scientific databases such as PubMed, PubChem, Science.gov 31

32. 32 Thanks! Questions?